package demo1;

import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

// 删除操作
public class Del {
    public static void main(String[] args) throws SQLException {

        DataSource dataSource = new MysqlDataSource();
        ((MysqlDataSource) dataSource).setURL("jdbc:mysql://127.0.0.1:3306/java109?characterEncoding=utf8&useSSL=false");
        ((MysqlDataSource)dataSource).setUser("root");
        ((MysqlDataSource)dataSource).setPassword("123456");

        Connection connection = dataSource.getConnection();

        String sql =" delete from student where id = 4";

        PreparedStatement statement = connection.prepareStatement(sql);
        int n = statement.executeUpdate();
        System.out.println("n = " + n);

        statement.close();
        connection.close();
    }
}
